Door check and closer.



No. 708,586. Patented sept. 9, |902. x. nelcHLm.

DUUR CHECK AND CLOSER.

(Application led May 6, 1902.)

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Doof: CHECK AND CLOSER.

(Application led May 6, 1902.) V(No model.) f 2 sheets-sheet 2.

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UNITED Arrivi rricn.

`XAVER REIOHLIN, OF IIORGEN, SWITZERLAND, ASSIGNOR TO ANTONY SOHORNO, OFIRVINGTON, NEW JERSEY.

`DOOR CHECK AND CLOSER.

SPECIFICATION forming part of Letters Patent No. 708,586, datedSeptember 9, 1902.

Application led May, 1902. Serial No. 106,143. (No model.)

To .c1/ZZ whom t 11i/ay concern/f Be it known that I, XAVER REICHLIN, acitizen of the Republic of Switzerland, residing at Horgen, Switzerland,have invented new and usefulImprovements in Door Ohecksand Springs, ofwhich the following is a complete specification.

The present invention has reference to improvements in automatic doorchecks and springs and relates more especially to a check mechanism incombination with the ordinary spiral-spring type of closing mechanismfor the purpose of preventing the door from being violently slammedshut.

The improvement essentially consists in a band-brake inilucncing themainspringdrum, which is automatically actuated upon the door beingshut, so that a braking action is set up, which, however, just beforethe door finishes its closing movement is relieved, allowing the door toshut quickly and surely.

In order to make the invention more readily understood, I will describeit with reference to the accompanying sheets of drawings, in which-Figure 1 represents a side elevation of my improved mechanism. Fig. 2 isa plan view of same, the door being closed. Fig. 3shows a horiiontalsection onV line A B of Fig. 1. Fig. 4 is a vertical lsection throughthe springdrum. Fig. 5 represents a plan view of the mechanism with thedoor in partly-open position.

Upon a plate 1, attached by means of flaps 2 to the door-wing 3, issecured the drum 4, containing the main spiral spring 5, one end ofwhich is fastened to the projection or nose t' and the other end ofwhich is secured to the pin 7, rotatingly journaled in the plate l andin the cover of the drum. Upon the upper square part 8 of this pin 7rides anyarm 9, to which is secured by means of a bolt one end of abrake-band 13, surrounding the springdrum 4, the other end of which isyieldingly held by means of a screw-bolt 10, a helical spring 11surrounding the latter, said bolt freely passing through an arm 12, thatin turn is 'secured to the arm 16 of the brakelever 15 16, pivoted at14. The arm 15 of this brake-lever contains a recess in which takes theshorter arm 17 of a double-armed tensionlever 17 20, pivoted at 18, astop 19 limiting its movcmcntin one direction. To the longer arm 2O ofthis tension-lever is swiveled the rod 2l, the other end of which ispivoted to the door-casing, as at 22.

Upon a plate 35 with slot 36, adjustably secured upon the cover of thespring-drum by means of the screw 34, is secured an arm 24, pivotedat23.Aspring is coiled aboutthe pin 7, one end 25 of which bears against thescrew 26 and the other end of which rests against the said arm 24, as isshown in dotted linesin Fig.l 5, keeping the arm 24 in such a positionthat a set-screw 28, threaded into the eXtension 27 thereof, restsagainst the head of the screw 26. The free end of the arm 24 carries awedge-piece 30, adj ustably secured thereto by means of screw 29 andextending into the y pathof a roller 33, secured to the lever 15 16 bymeans of the screws31 The arm 24 and wedge-piece 30 are preferably,though not necessarily, formed separately. The arm 24 being pivoted nearone end at 23 will give as the roller passes over it during the openingof the door and be slightly rotated on its pivot 23 against the stressof the spring coiled about the pivot 7. Thus the cam or wedge-piece 30,either on the arm 24 or adjustably secured to said arm,will ride underthe roller. Upon the door being opened theroller bears against theWedge-piece 30, causing the arm 24 to turn about its pivot 23. At thesame time the main spiral spring, which when the door is still closed isalready under tension, is still further contracted by the movement ofthe tension-lever 17 2O in the direction of the arrow, Fig. 2. If nowthe open door is let go, it willshut under the action of the mainspring5, the roller 33 actuating the wedge-piece 30, so that the brake-leveris turned, tightening the brake-band. By reason of the pressure betweenroller 33 and wedge-piece 30 the arm 24 is slowly moved backward, thearm 24 not being in this instance easily moved out ofthe way 0f theroller for the reason that the roller rides over the increasingcam-surface and exerts a pressure in a line substantially throughthepivot 23, so that just before the door is wholly closed the roller 33leaves the wedge piece, and the door can now close quickly, yet withoutslamming, owing to the brake-power no longer being exerted. If theattempt. should be made to violently close the door, the rod 21 wouldtend to turn the arm 2O of the tension-lever in the direction of the IOOarrow, Fig. 5, causing the arm 17 to press against the arm of thedouble-armed lever 15 16 and turn the latter, so that the brakeband istightened around the spring-drum., with the result of checking thedoorsmovement.

In order to vary the period of actuating the brake, either the plate 35after loosening the screw 34 is turned one way or the other and securedagain by tightening the screw 34, so that the relative position of thewedgepiece to the roller is altered, or the wedgepiece is shiftedaccordingly on the arm 24. The braking power may be regulated either bymore or less tightening in advance the brake-band 13 by means of thescrew-bolt lO or by adjusting the screw 28. If the latter is screwedback more or less, the arm 24, with the wedge-piece 30, is turned aboutits pivot 23, so that the wedge-piece extends more or less into the pathof the roller 33, causing the brake-lever to be attractedcorrespondingly. I may state that the wedge-piece is located withreference to the pivot of the arm 23 so that the common normal ofpressure at the point of contact between roller 33 and wedge passes nearthe pivot 23, whereby for pressing back the arm 24 only7 a relativelysmall component of force results, with the effect of causing very slowmovement of the arm 24 and sure attraction of the brake-lever.

What I claim, and desire to secure by Letters Patent, is-

l. In door checks and springs, the combination of the main spiral springmechanism, a brake-band surrounding the drum of the said mainspringmechanism, a brake-lever connected to one end of the said brake-band,and a Wedge-piece to actuate the said brakelever, for the purpose ofatlrst braking the closing door and then releasingit again,substantially as described. l y

2. In door checks and springs, the combination of the mainspringmechanism, a brakeband surrounding the spring-drum, a brakeleverconnected to one end of the said brakeband, a wedge-piece cooperatingwith the said brake-lever, a screw-bolt connecting the said brake-bandwith the said brake-lever, and an inter-posed spring, for the purpose ofaltering the tension of the said brake-band, substantially as set forth.

3. In door checks and springs,the combination of the mainspringmechanism, a brakeband surrounding the spring-drum, a brakeleverconnected to one end of the said brakeband, a wedge-piece cooperatingwith the said brake-lever, a plate carrying the said Wedgepiece andturning about the mainspring-pin, and means for adjustably securing thesaid plate, for the purpose of varying the relative position of the saidwedge-piece to the said brake-lever, substantially as and for thepurpose set forth.

4. In door checks and springs,the combination of the mainspringmechanism, a brake-4 band surrounding the spring-drum, a brakeleverconnected to one end of the said brakeband, a wedge-piece cooperatingwith the said brake-lever, and anv arm pivotally secured upon themainspring-drum and carrying the Isaid wedge-piece,and means foradjusting the said Wedge-piece upon the said pivoted arm,substantiallyas and for the purpose specified.

5. In door-checks and springs,the combination of the mainspringmechanism, a brakeband surrounding the spring-drum, a brakeleverconnected to one end of the said brakeband, a wedge-piece cooperatingwith the said brake-lever, an arm pivotally secured upon themainspring-drum and carrying the said wedge-piece, means for adjustingthe said wedge-piece upon the said pivoted arm, and means for alteringthe starting position of the said pivoted arm, for the purpose ofreducing or enhancing the braking action,substantially as set forth.

6. In door checks and springs,the combination of the mainspringmechanism, a brakeband surrounding the spring-drum, a brakelever adjustably connected to one end of the said brake-band, an adjustablewedge-piece cooperating with the said brake-lever, and a tension-lever,adapted to actuate the said brake-band upon the door being violentlyslammed, substantially as described.

7. In a door-check, the combination with a drum, a spring therein, alever, a roller on the lever and a cam-surface on which said roller actsto check the closing of the door, substantially as set forth.

8. In a door-check, the combination with a drum, a spring therein, alever, a roller on the lever and a pivoted cam-surface on which theroller acts to check the closing of the door,sub stantially as setforth.

9. In a door-check, the combination with a drum, a spring therein, alever, a roller on the lever and a pivoted adjustable cam-surface onwhich the roller acts to check the closing of the door, substantially asset forth.

10. In a door-check, the combination with a drum, a spring therein, alever, a roller on the lever and a pivoted adjustable cam-surface onwhich the roller acts to check the closing of the door, and means toalter the point at which the door is checked,substantially as set forth.

11. In a door-check, the combination with a drum, a lever, a roller onthe lever, and a cam pivoted on the drum and havinga long and a shortarm, said roller adapted to engage the long arm to check the closing ofthe door, and a spring to hold the cam in operative position and allowit to move out of the path of the roller when the door is opened,substantially as set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

XAVER REICI-ILIN.

Witnesses:

MORITZ VEITH, A. LIEBERKNECHT.

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